VelocityFeed

This core function is used to start the axis at a commanded velocity without a defined target position.

Properties

Name	Type	Access	Description
InitState	BOOL	Get, Set	The core function is not completely and successfully initialized.
FB_VelocityFeed
GearFactor	LREAL	Get, Set	The factor with which to respond to GuidingValue.
GuidingValue	LREAL	Get, Set	The commanded velocity.
FB_CorefunctionFeedback
AbortedState	BOOL	Get, Set	Signals the abort of a command by another Corefunction.
BusyState	BOOL	Get, Set	Signals the active execution of a command.
DoneState	BOOL	Get, Set	Signals the successful execution of a command.
IdleState	BOOL	Get, Set	The Corefunction is ready for operation and commandable.
IsCommanded	BOOL	Get	Signals the pending of a command.
FB_Corefunction
FailedState	BOOL	Get, Set	If IsActivated is TRUE at the same time: Signals the failure of an accepted command. If IsActivated is FALSE at the same time: Signals the rejection of a command.
HasFeedback	BOOL	Get	The core function has responded to a pending command.
IsActivated	BOOL	Get	The core function has an accepted command pending.
IsLocalCmd	BOOL	Get	Signals that the axis is assigned with a command of this core function.
ReadyState	BOOL	Get, Set	The Corefunction is ready for operation, but is not commandable at this time. Possible reasons are: - The axis is not enabled. - Another Corefunction is active. - The Corefunction does not support any commands.

	Decouple the axis A GearFactor of 0.0 will effectively decouple the axis from the GuidingValue.

	Move in the opposite direction A negative GearFactor causes the axis to move in the opposite direction.

Methods

Name	Description
[`INTERN`] Cyclic()	This method is called cyclically by the axis.
FB_VelocityFeed
DoFeed()	A rising edge triggers the core function.

Interfaces

Type	Description
I_Corefunction	Standard interface on FB_Corefunction.
I_VelocityFeed	Standard interface on FB_VelocityFeed.
I_CorefunctionFeedback	Standard interface on FB_CorefunctionFeedback.

Example:

IF bCmdVeloFeed THEN

    iAxisBase.VelocityFeed.GearFactor := 1.0;
    iAxisBase.VelocityFeed.GuidingValue := 20.0;    // [mm/s]
    iAxisBase.VelocityFeed.DoFeed(TRUE);

ELSIF iAxisBase.VelocityFeed.IsCommanded THEN

    iAxisBase.VelocityFeed.DoFeed(FALSE);
END_IF

Requirements

Development environment	Target platform	PLC libraries to include
TwinCAT v3.1.4024.35	PC or CX (x64, x86)	Tc3_PlasticFunctions v3.12.4.26 or higher

Further Information

DoFeed()